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• I have searched the existing issues and my issue is unique
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Description Overview

this is a follow-up to #3707. the release of React v19 stable means that support for the new onBeforeToggle event prop, as well as the camelCased popover attributes popoverTarget and popoverTargetAction, has now landed in the current latest stable release (they were added in this PR).

here’s an example trigger + popover:

<>
    <button popoverTarget="foo" popoverTargetAction="show">
        Open Popover
    </button>
    <div
        id="foo"
        onBeforeToggle={event => console.log('beforeToggle from', event.oldState, 'to', event.newState)}
        popover="auto"
    >
        <h1>Popover Foo</h1>
    </div>
</>

example errors:

  68:13  error  Unknown property 'onBeforeToggle' found                                          react/no-unknown-property
  78:17  error  Unknown property 'popoverTarget' found, use 'popovertarget' instead              react/no-unknown-property
  79:17  error  Unknown property 'popoverTargetAction' found, use 'popovertargetaction' instead  react/no-unknown-property

these occur when running my lint npm run script: "lint": "eslint .",

Expected Behavior

i expect the new event, onBeforeToggle and the camelCased attributes to not be considered “unknown” properties

eslint-plugin-react version

v7.37.2

eslint version

v9.16.0

node version

v22.7.0